One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6,8,9)(7,11,12,10)(13,14,18,16)(15,20,17,19)(21,22)(23,29)(24,32)(25,26)(27,31)(28,33)(30,34)(35,36)(6,9)(7,12)(13,14)(15,19)(16,18)(17,20)(22,26)(24,33)(27,29)(30,36) involution — undirected(5,7,8,12)(6,10,9,11)(13,15,18,17)(14,19,16,20)(21,22)(23,29)(24,28)(25,26)(27,31)(30,35)(32,33)(34,36)(1,2,3,4)(5,7)(6,10)(8,12)(9,11)(13,16,18,14)(15,19,17,20)(21,23,25,31)(22,27,26,29)(24,30,33,36)(28,34,32,35)(5,6)(7,10)(8,9)(11,12)(13,17,18,15)(14,19,16,20)(21,24)(22,28)(23,30)(25,33)(26,32)(27,34)(29,35)(31,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.